The rockets rate of change in miles per second is:
(5 - 1)/(2.5*60 - 30) = 1/30 miler per second or 0.033
the rockets rate of change in miles per minute is:
(5 - 1)/(2.5 - 30/60) = 2 miles per minute
Answer:
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How can you determine the best method of solving a system of equations?
Elimination is best used when both equations are in standard form (Ax + By = C).
Elimination is also the best method to use if all of the variables have a coefficient other than 1.
Hope this helps
4+4v = 3v +4
------- = -----------
-3 2
use cross products
(4+4v) *2 = -3*(3v+4)
distribute
8+8v = -9v-12
add 9v to each side
8+17v = -12
subtract 8 from each side
17v = -20
divide by 17
v = -20/17
Answer:
20 is 10% of 200
Step-by-step explanation:
We have, 10% × x = 20
or,
10
100
× x = 20
Multiplying both sides by 100 and dividing both sides by 10,
we have x = 20 ×
100
10
x = 200
If you are using a calculator, simply enter 20×100÷10, which will give you the answer.
